1. The industrial electricity consumer whose load is at a low power factor will


(a) have difficulty in obtaining a supply

(b) take a higher current than is necessary to provide his loads

(c) pay a higher rate for his electrical energy than he would if his power factor were improved

(d) pay a low rate for the electrical energy he consumed

2.A single central power-factor correction capacitor bank at the incoming supply position provides

(a) no power-factor correction

(b) load power-factor correction

(c) poor power-factor correction

(d) bulk power-factor correction

3. The advantages of load power-factor correction include

(a) overall reduced cost of correction

(b) reduced power losses in installation supply mains

(c) reduced tariff costs when compared with group correction

(d) lower currents within individual loads

4. A bulk power-factor-correction system which is left connected to an installation where the load has reduced considerably may result in

(a) damage to the installation cables

(b) a reduced supply tariff (c) operation at a leading power factor (d) considerably reduced maximum demand